#!/usr/bin/env python3
import sys
from typing import Sequence


def part1(lines: Sequence[int]):
    inc = 0
    last = lines[0]
    for line in lines[1:]:
        if line > last:
            inc += 1
        last = line
    print(f"{inc} increments")


def part2(lines: Sequence[int]):
    WINDOW_SIZE = 3
    last = sum(lines[0:WINDOW_SIZE])
    inc = 0
    for i in range(1, len(lines) - WINDOW_SIZE + 1):
        window = sum(lines[i:i+WINDOW_SIZE])
        if window > last:
            inc += 1
        last = window
    print(f"{inc} increments")


lines = [int(line) for line in sys.stdin if line]
print("Part 1")
part1(lines)
print("Part 2")
part2(lines)